<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片内容区 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表(表格)区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="deleteUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色 -->
            <el-tooltip
              class="item"
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button type="warning" icon="el-icon-setting" size="mini"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>

    <!-- 对话框组件  :visible.sync(设置是否显示对话框) width(设置对话框的宽度)
    :before-close(在对话框关闭前触发的事件)-->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose">
      <!-- 对话框主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 对话框底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClose">
      <!-- 对话框主体区域 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^\w+@\w+(\.\w+)+$/;
      if (regEmail.test(value)) {
        return cb();
      }
      //返回一个错误提示
      cb(new Error("请输入合法的邮箱"));
    };
    //验证手机号码的规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^1[34578]\d{9}$/;
      if (regMobile.test(value)) {
        return cb();
      }
      //返回一个错误提示
      cb(new Error("请输入合法的手机号码"));
    };
    return {
      //查询用户信息的参数
      queryInfo: {
        query: "",
        pagenum: 1,
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户的对话框是否显示
      addDialogVisible: false,
      //控制修改用户的对话框是否显示
      editDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: ""
      },
      editForm: {
        username: "",
        email: "",
        mobile: ""
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名称", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名在3~10个字符之间",
            trigger: "blur"
          }
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "用户名在6~15个字符之间",
            trigger: "blur"
          }
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          {
            message: "邮箱格式不正确，请重新输入",
            validator: checkEmail,
            trigger: "blur"
          }
        ],
        mobile: [
          { required: true, message: "请输入手机号码", trigger: "blur" },
          {
            message: "手机号码不正确，请重新输入",
            validator: checkMobile,
            trigger: "blur"
          }
        ]
      },
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: "请输入用户邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" }
        ],
        mobile: [
          { required: true, message: "请输入用户手机", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" }
        ]
      }
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    //发送请求获取用户列表数据
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo
      });
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表失败！");
      }
      this.userList = res.data.users;
      this.total = res.data.total;
    },
    //改变页面显示记录数
    handleSizeChange(newPageSize) {
      console.log(newPageSize);
      this.queryInfo.pagesize = newPageSize;
      this.getUserList();
    },
    //改变当前页码
    handleCurrentChange(newPagenum) {
      console.log(newPagenum);
      this.queryInfo.pagenum = newPagenum;
      this.getUserList();
    },
    //修改用户状态
    async userStateChanged(row) {
      //发送请求进行状态修改
      const { data: res } = await this.$http.put(
        `users/${row.id}/state/${row.mg_state}`
      );
      //如果返回状态为异常状态则报错并返回
      if (res.meta.status !== 200) {
        row.mg_state = !row.mg_state;
        return this.$message.error("修改状态失败");
      }
      this.$message.success("更新状态成功");
    },
    //监听添加用户对话框的关闭事件
    addDialogClose() {
      //对话框关闭之后，重置表单
      this.$refs.addFormRef.resetFields();
    },
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error("请输入正确的用户信息");
        }
        const { data: res } = await this.$http.put("users", this.addForm);
        if (res.meta.status !== 201) {
          this.$message.error("添加用户失败");
        }
        this.$message.success("添加用户成功");
        this.addDialogVisible = false;
        this.getUserList();
      });
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id)
      const { data: res } = await this.$http.get("users/" + id);

      if (res.meta.status !== 200) {
        return this.$message.error("查询用户信息失败！");
      }

      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    // 监听修改用户对话框的关闭事件
    editDialogClose() {
      this.$refs.editFormRef.resetFields();
    },
    // 编辑用户信息
    editUserInfo() {
      //用户点击修改表单中的确定按钮之后，验证表单数据
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return this.$message.error("请填写完整用户信息");
        //发送请求完成修改用户的操作
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          this.editForm
        );
        //判断如果修改失败，就做提示
        if (res.meta.status !== 200) return this.$message.error("修改用户失败");
        //修改成功的提示
        this.$message.success("修改用户成功");
        //关闭对话框
        this.editDialogVisible = false;
        //重新请求最新的数据
        this.getUserList();
      });
    },
    // 删除用户
    async deleteUserById(id) {
      // 弹出确认删除对话框，是否删除用户
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      //如果用户点击确认，则confirmResult 为'confirm'
      //如果用户点击取消, 则confirmResult获取的就是catch的错误消息'cancel'
      if (confirmResult != "confirm") {
        return this.$message.info("已经取消删除");
      }

      //发送请求根据id完成删除操作
      const { data: res } = await this.$http.delete("users/" + id);
      //判断如果删除失败，就做提示
      if (res.meta.status !== 200) return this.$message.error("删除用户失败");
      //修改成功的提示
      this.$message.success("删除用户成功");
      //重新请求最新的数据
      this.getUserList();
    }
  }
};
</script>

<style lang="less" scoped>
</style>